Passenger side under the dash and glove compartment. If you are trying to repair or replace the blower motor I highly recommend you get a Haynes repair manual for your vehicle as the dash needs to be disassembled in a specific order to avoid damage.
On the Lumina in the early 90's the blower is under the RIGHT SIDE of the dash, by the passenger's feet behind that shroud and up behind the panel of relays. it's a chore to get to without removing most of the dash but it can be done.
SOURCE: heater blower motor
On my '95 Trans Sport (I don;t think theere's any difference - under the hood - look about the middle of the firewall near the top. You'll see the motor & outer housing. There are 4 screws in the housing, but don't know if disconnecting & removing the screws will allow you withdraw the blower assy on the engine side of the firewall.
For me, I checked there was volts at the blower electrical connector.
There was, so I took a soft hammer and whacked the motor casing a few times. It started to turn, but with a squeel. So I whacked it more, the squeel lessened & the motor speeded up. So I just continued whacking from different directions until I seemed to have aligned things - max speed, no squeel. Seems to be working 100% now (for the time being).
If no volts at the motor connector, try whacking the blower relay at the upper portion of the firewall about a foot to the left of the blower. This worked as a temporary fix on my old '91 APV. Eventually it failed for good. The new relay fried in short order. Had to put in a higher Amps one. Also check the relay connector, mine was corroded out and had to be replaced as well.
SOURCE: 1990 chevy lumina euro 2-door. passenger window
Chevy cheeped out and has been using aluminum rivots to hold the motor in place. to remove the motor remove the rivets.
SOURCE: Where is the Blower Motor Relay located on a 1997
This is fuse #14. It is located directly above the fuse that is dead center in the fuse panel. The fuse panel is on the passenger side of the dashboard. You must open the passenger door in order to access this fuse panel. Good luck
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